Hot-blast heater.



W. M. KINGSBURY.

HOT BLAST HEATER.

APPLICATION F|LED.APR.9. 1913.

Patented July 6, 1915.

2 SHEETS-SHEETI Mbo/mmf W. NI. KINGSBURY.

HOT BLAST HEATER.

APPucAloN FILED Ama. |913.

LKQW Patented July 6, 1915.

WILLIAM M. KINGSBURY, 0F CLEVELAND, OHIO.

` Hor-BLAST HEATER.

maan.

To all whom 'it may concern Be it known that I, WILLIAM M. KINGS- num?,citizen ofthe United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in Hot-Blast Heaters, of which the following is aspecification.

My invention hasl relation to that class of heaters which are used inheating air driven over same by mechanical force, and adapted for thereception of steam at high or low pressure or any other heat conductingfluids or liquids. The several improvements hereinafter specified may,however, be employed advantageously in heaters of the class known asin-direct radiators, or those which arel located in an air-conductingHue at a distance fromthe space to be heated. l

An object of my present invention is, to simplify the construction,reduce the cost of a heater by reducing the number of separate piecesand the number of joints to be made up and I attain thisv object, amongothers, by

-m'eans of the construction and arrangement of parts', to behereinafterdescribed, 1ny

which the fluids shall be suitably divided within the structure, causinga positive cir lculation through the loops, and exposing a large heatingsurface of metal to the air to be heated.l ,The header and loops are soconstructed that both may be made of castmetal, 'being united by what isknown as a slip-nipple joint secured together by means of stud boltshaving-a guide-post between nipples so as not to displace same whileassembling; it can be readily united for use or disconnected for repairsand the structure be automatically drained of condensed steam withoutinterference with the heat producing qualities of the apparatus. v

The heating, surface of loops is providedlwith a series of extendedprojections cored out, tapered and curved, which allows for expansionand eliminates any possible water deposits. 'There is no chance ofretarding the air as the projections are spaced equally, the 4frictionis reduced by the projection-beingl curved at ends. These projections orextended heating surface are set on an angle running'horizontally. Asolid corrugated surface is projectedfrom the loop running vertically;it not only acts as heating surface but helps to strengthen the loop.

An embodiment of the invention is illus- Specication of Letters Patent.

Patenten .nay e, lola.

Application filed April 9,` 1913. Serial No. 760,058.

section on the line 3-3 of Fig. 2. Fig. 4 is a section on the line 4 4of Fig. 2. Fig. 5 1s a side view of the header. Fig. G is a side view ofone of the loops.

Referring specifically tothe drawings H indicates a longitudinallyextendingheader on which a number-'of loops L are mounted. The headermay be made of any desired length, to accommodate the desired number ofloops. The header is in the form of a casting having a centrallongitudinal vertical partition 4, between the steam and condensationchambers, with a tapping 7 to the former, a tapping 6 to the latter, anda Vent tapping 5. The upper part of the side wall of each header isinclined inwardly as indicated at 20, forming a longitudinal recessunder the top plate 21 of the header which thus overhangs the recess.Said top plate has openings on each side of the partition 4 to receivethe slip nipples 2; and 13 are braces cast on the outside of the header,under the flange of the top 21, for strengthening the same. Said flangesare tapped to receive the cap bolts 12 by which the loops L areattached, said cap bolts being screwed into the lower ends of the loopsand are fastened by nuts 11 thereon. It will be seen that the bolts areaccessible at the outside, so that any loop can be readily connected ordisconnected, and the top plate of the header has a guide rod orprojection 1 at the top of the partition 4 for the purpose of holding orlocating theloop and header while assembling.

The loops are preferably made of cast metal and stand vertically, eachloop having a partition 9 extending nearly to the top thereof forcausing a circulation upwardly on the steam side and downwardly on theopposite side, from and to the respective compartments of the header,the bottom plate of each loop having openings to lit on the slightlyconical slip nipples 2, to form a tight .joint when the bolts 12Aarejoined. The loops are what is known in the art as closed loops'. Thatis, there is no space, but merely a partition 9, between the upv anddown passages of the loop, and, consequently, no air can flow betweensaid passages or through the loop. Thereby the air flowing throughtheradiator is restricted to the passages between adjacent loops, whichis necessary to hold the blast of air in its course. The sides of eachloop have vertical ribsv 17 cast in the body thereof and running fromtop to bottom, and these ribs serve to strengthen the loop as well as toprovide additional heating surfaces, and the edges of the loops arebeveled to a central line 19, allowing the air to divide freely bothways without great resistance.

Each loop has on its sides extended heating surfaces formed by hollowprojections or bosses 16, extending outwardly from the bodyof the loopand cored, tapered and curved, allowing for expansion and preventing anypossible water deposits. These projections are spaced apart equally onthe sides, and when the loops are assembled they extend or projecttoward each other, and as the air is forced through the heater, betweenthe loops, it is heated by the body and extended surfaces of the loops,passing around and between the. projections 16 as it flows across theheater.

The loops standing beside each other in each radiator areconnectedtogether at the top by means of staples .14 which are droppedinto holes 15 in flanges 30 projecting on each side at the top of theloop, and these staples may be clenched under the flanges if desired.

It will be observed, from Figs. 1 and 3, that the radiators standclosely side by side with their loops in substantial contact at theedges 19 of each. This is permitted because the headers H are no widerthan the loops. And, also, the top ianges 30 arein Contact between theloops, the whole forminga battery or gang having cross air passagesbetween the loops, closed at the top by the joined flanges 8O and at thebottom by lthe headers I-I,.so the air must travel across the entiregang and in contact with the hollow radiating projections 16, thearrangement being particularly designed for heating a blast of airforced across or through the battery by a fan orthe like, as statedabove.-

i To remove any loop it is only necessary to detach the staples 14 andremove the nuts 11 of the bolts 12, permitting each loop to beliftedoil' and removed. The nut can be got at on thev outside. 31 is adrain outlet for condensation on the supply side of the header H. Thesteam' circulation is from the inlet 7 'to the header and thenceupwardly through the loops connected thereto and around the divisionplate 9 and out through the outlet 6 at the opposite side of the header.

What I claim as new is:

1. A radiator structure comprising a plurality of radiators standingside by side, each radiator consisting of a longitudinal base header andclosed loops connected at opposite ends thereto and spaced apart, saidspaces forming air passages extending across the structure, and theloops having to plates which meet at their longitudin edges between theradiators and also at their transverse edges between the loops, therebyclosing the tops of said spaces.

2. A radiator structure comprisin a plurality of radiators located sideby si e, each radiator comprising a base header and a row of spacedloops standing thereon and communicating therewith, the loops beingclosed and the width of the loops being as great as that of the headers,whereby the edges of the loops of adjacent radiators are in contact,forming continuous air passages extending across the structure betweenthe loops, the loops having top plates which join to close the top ofsaid passages.

3. .A radiator structure comprising a plurality of radiators locatedside by side, each radiator comprising a base header with a top plateand undercut recesses in the sides under said top plate, the headers ofthe radiators being located closely adjacent to each other to form asubstantially closed bottom for said structure, and a plurality ofspaced transverse loops standin upon said plate and communicating witsaid header, bolts connecting the plate and loops and accessible at saidrecesses, the edges of the loops of adjacent radiators extendingsubstantially Hush with the side wall of the header, and top plates onsaid loops covering the spaces therebetween.

v 4f. A radiator structure comprising a plurality of radiators standingclosely side by side, each radiator consisting of a base header and aplurality of loops thereon iand communicating therewith, the headers andloops being of the same width, permitting the headers and loops ofadjacent radiators to stand in close relation along their entire height,the loops of each radiator being spaced apart, forming transverse airpassages through the structure, and each loop having radiatingprojections extending into said passages, and also having top plateswhich join to close the top of said passages.

